RA/DEC (2000)
23:09:30.805 +32:40:41.72
347.3783525 +32.6782563
Type
SN Ia
Redshift
0.021832
Discovery ReportClassification Report
Related AstroNotes: 2026-191
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2026-06-11 03:07:42.240
TNS AT
Y
Public
Y
Discovery Mag
18.848
Filter
wide-ATLAS
Reporter/s
J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii), N. Erasmus, W. Koorts (South African Astronomical Observatory), A. Jordan, V. Suc (UAI, Obstech), M. R. Alarcón, J. Licandro, P. Nichita (IAC), S. J. Smartt, K. W. Smith (Oxford/QUB), D. R. Young, M. Nicholl, M. Fulton, M. McCollum, T. Moore, J. Weston, X. Sheng, C. R. Angus, A. Wilson, A. Aamer, D. Magill, P. J. Broda, A. J. Smith (QUB), P. Ramsden (Birmingham/QUB), L. Shingles (GSI/QUB), S. Srivastav, J. H. Gillanders, H. Stevance, A. J. Cooper, F. Stoppa, J. Tweddle, L. Eastman (Oxford), L. Rhodes (TSI/McGill), A. Rest (STScI), T.-W. Chen (NCU), C. Stubbs (Harvard), J. S. Sommer (LMU), B. P. Schmidt (ANU)
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2026oxc - 2026-06-15 08:12:25 P60 / SEDM (ZTF)z=
 ▌SN_2026oxc - 2026-06-15 03:42:14 NOT / ALFOSC (GOTO)z=
▌Show H at z=vexp= km/s
▌Show He at z=vexp= km/s
▌Show He II at z=vexp= km/s
▌Show C II at z=vexp= km/s
▌Show C III at z=vexp= km/s
▌Show C IV at z=vexp= km/s
▌Show N II at z=vexp= km/s
▌Show N III at z=vexp= km/s
▌Show N IV at z=vexp= km/s
▌Show N V at z=vexp= km/s
▌Show O at z=vexp= km/s
▌Show [O I] at z=vexp= km/s
▌Show O II at z=vexp= km/s
▌Show [O II] at z=vexp= km/s
▌Show [O III] at z=vexp= km/s
▌Show O V at z=vexp= km/s
▌Show O VI at z=vexp= km/s
▌Show Na at z=vexp= km/s
▌Show Mg at z=vexp= km/s
▌Show Mg II at z=vexp= km/s
▌Show Si II at z=vexp= km/s
▌Show S II at z=vexp= km/s
▌Show Ca II at z=vexp= km/s
▌Show [Ca II] at z=vexp= km/s
▌Show Fe II at z=vexp= km/s
▌Show Fe III at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌Show Tellurics 
▌Show Galaxy lines at z=
▌Show WR-WN at z=vexp= km/s
▌Show WR-WC/O at z=vexp= km/s
   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)

Light curves

 ▌ATLAS-TDO_ATLAS-05_wide
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌ATLAS-HKO_ATLAS-02_orange
   
Pointer position (MJD, Mag, Abs.Mag): (0.00, 0.00, 0.00)
Spectra
 ID Obs-date (UT) Tel / Inst Exp-Time Observer/s Reducer/s Group Spectrum ascii file Spectrum fits file Spec. Type Assoc. Groups End prop. period Remarks
24066 2026-06-15 08:12:25 P60 / SEDM 2160 SEDmRobot auto ZTF tns_2026oxc_2026-06-15_08-12-25.044207_P60_SEDM_ZTF.ascii Object
24070 2026-06-15 03:42:14 NOT / ALFOSC M. Pursiainen, J. Mills, D. O'Neill M. Pursiainen, J. Mills, D. O'Neill GOTO tns_2026oxc_2026-06-15_03-42-13.621_NOT_ALFOSC_GOTO.dat Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
wide-ATLAS ATLAS-TDO_ATLAS-05 2026-06-11 03:07:42 - 2026-06-11 03:07:42 2461202.63035 - 2461202.63035 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
590985 2026-06-11 03:07:42 2461202.63035 18.848 0.11 19.82 ABMag wide-ATLAS ATLAS-TDO_ATLAS-05 30 Robot
r-ZTF P48_ZTF-Cam 2026-06-09 09:45:57 - 2026-06-09 09:45:57 2461200.9069097 - 2461200.9069097 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
591677 2026-06-09 09:45:57 2461200.9069097 19.6148 0.161956 ABMag r-ZTF P48_ZTF-Cam
g-ZTF P48_ZTF-Cam 2026-06-04 10:19:02 - 2026-06-14 11:06:21 2461195.9298843 - 2461205.9627431 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
591678 2026-06-14 11:06:21 2461205.9627431 17.3083 0.0413777 ABMag g-ZTF P48_ZTF-Cam
591676 2026-06-04 10:19:02 2461195.9298843 20.1564 ABMag g-ZTF P48_ZTF-Cam [Last non detection]
orange-ATLAS ATLAS-HKO_ATLAS-02 2026-06-09 14:40:18 - 2026-06-09 14:40:18 2461201.11132 - 2461201.11132 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
590984 2026-06-09 14:40:18 2461201.11132 18.93 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 30 Robot [Last non detection]
AT Reports
ID Time received (UT) Sender Reporter/s Reporting group Disc. Data Source RA DEC Discovery date (UT) Discovery Mag. Filter Related files AT Type Host name Internal name Assoc. Groups End prop. period Remarks ADS Bibcode Unreal Auto classification
308395 2026-06-14 15:41:50 Fritz Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al. ZTF ZTF 23:09:30.805 +32:40:41.72 2026-06-09 09:45:56.998 19.6148 r-ZTF PSN ZTF26abasxfg ZTF N
308067 2026-06-11 10:44:30 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 23:09:30.800 +32:40:41.79 2026-06-11 03:07:42.240 18.848 wide-ATLAS PSN ATLAS26hbm ATLAS 2026TNSTR2445....1T N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
24064 2026-06-15 09:38:16 Mark Magee M. Pursiainen, J. Mills, D. O'Neill, M. Magee, K. Ackley, M. Dyer, J. Lyman, K. Ulaczyk, D. Steeghs, D. Galloway, V. Dhillon, P. O'Brien, G. Ramsay, K. Noysena, R. Kotak, R. Breton, J. Casares, L. Nuttall, R. Starling, B. Gompertz, B. Godson, T. Killestein, A. Kumar, on behalf of GOTO collaboration GOTO SN Ia 0.021832 1 GOTO SNID provides matches to normal type Ia supernovae around peak
Spectra
ID Obs-date (UT) Tel / Inst Exp-Time Observer/s Reducer/s Group Spectrum ascii file Spectrum fits file Spec. Type Assoc. Groups End prop. period Remarks
24070 2026-06-15 03:42:14 NOT / ALFOSC M. Pursiainen, J. Mills, D. O'Neill M. Pursiainen, J. Mills, D. O'Neill GOTO tns_2026oxc_2026-06-15_03-42-13.621_NOT_ALFOSC_GOTO.dat Object
24060 2026-06-15 09:07:00 ZTF_Bot1 J. Wise, J. Castaneda Jaimes, C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF) ZTF SN Ia 0.021832 1 ZTF
Spectra
ID Obs-date (UT) Tel / Inst Exp-Time Observer/s Reducer/s Group Spectrum ascii file Spectrum fits file Spec. Type Assoc. Groups End prop. period Remarks
24066 2026-06-15 08:12:25 P60 / SEDM 2160 SEDmRobot auto ZTF tns_2026oxc_2026-06-15_08-12-25.044207_P60_SEDM_ZTF.ascii Object

Comments

TNS
System

Sun, 06/14/2026 - 15:41

Object coordinates updated

Object coordinates updated according to AT-report 308395 of Group ZTF
Previous RA, DEC: 23:09:30.800, +32:40:41.79 (347.378332, +32.678274)
Updated RA, DEC: 23:09:30.805, +32:40:41.72 (347.3783525, +32.6782563)